Abstract
In scattered areas over a great extent of the western Great Plains there is a very marked drainage alignment. It is shown that this cannot have been produced by the normal development of the drainage or by regional tilting. In certain restricted areas an alignment in a general northwesterly direction has been produced by structural deformation, but over the greater part of the area structural control has not been effective. In parts of southwestern Nebraska a very pronounced alignment has been produced by the deposition of sand by northwest winds, and it is probable that the alignment elsewhere has been produced in the same manner, and the sand deposits removed by erosion.

This publication has 0 references indexed in Scilit: